[labnetwork] Automatic gas shutoff at the source

[Peder Lenvik]

Our gas monitoring system has an output to the fire panel in the event we
have a major hazardous gas leak. It also has an input from the fire panel
to shut off all hazardous gases in the event of a fire alarm.

I believe all of the requirements are in the fire code.





*Peder Lenvik*



Sr. Facilities Lead



Electrical and Computer Engineering

E.S.B. Bldg. #225, Room 1109C

University California Santa Barbara, Santa Barbara, Ca. 93106



Cell: (805)698-7461



plenvik at ucsb.edu



http://www.nanotech.ucsb.edu



*From:* labnetwork <labnetwork-bounces at mtl.mit.edu> *On Behalf Of *Dennis
Schweiger
*Sent:* Wednesday, April 22, 2026 8:25 AM
*To:* Michelakis, Kostis <kostis at slac.stanford.edu>
*Cc:* labnetwork at mtl.mit.edu
*Subject:* Re: [labnetwork] Automatic gas shutoff at the source



Kostis,



good morning.  Here at the UofMichigan/LNF all of our gas detection (LSS)
is separate from the fire annunciation system .  We're monitoring about 165
points across the fab.  Many years ago we used the fire system for gas
detection, but it was problematic whenever we wanted to work on anything
gas detection related, we had to loop in our fire shop to disable the input
points.  With two separate systems, we can now do whatever service work we
need on our LSS, with out impacting the building fire system.  Both system
will send a notification to the other when they trigger, so we do have that
cross functionality.



Our fire detection system has no control over any of our HPM gases.  It's
strictly used for fire cause/effect.



Thanks,


Dennis Schweiger

University of Michigan/LNF

Facilities



734.647.2055 Ofc





On Tue, Apr 21, 2026 at 7:58 PM Michelakis, Kostis <kostis at slac.stanford.edu>
wrote:

Dear Labnetwork colleagues,

We are reviewing our emergency procedures and I would like to ask,
specifically for your hazardous and toxic gases, in the case of a fire
alarm being triggered, if you make use of the building's Fire Alarm Control
Panel (FACP) respective signal to automatically shutoff gases at the source.

We have at our disposal a range of engineering controls to shutoff gases at
the source, but I am specifically interested to learn if the method of
using directly the fire alarm signal has been mandated or otherwise chosen
in your setting.

Thank you in advance for your consideration,
Kostis

-- 

*Kostis Michelakis, PhD*

DMF Lab Manager

kostis at slac.stanford.edu

*SLAC National Accelerator Laboratory *

slac.stanford.edu



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